Improvement in electro-magnetic printing-telegraphs



` P. A. J. DUJARD||\|.I n

Pinting Telegraph. A

No. 82.502'. .Patented sept. 29, 1868.v

PR f'f'f' Eff H., ..i

l l I I l I K UNITED STATES PATENT OEETOE.

` `PIERRE ANTOLNE JOSEPH DUJARDLN, OE LILLE, EEANOE.

ll-M PROVEM ENT INv ELECTRO-MAGNETIC PRINTING-TELEGRAPHS.

v Q f specinauon forming piu-t ofLeaers Patent'No. 82,502, dated september 29, 186e. i

haveinvented Improvements in Electric Telegraphs; andI do hereby declare that the following is a full, clear, and exact description of lthe same, reference being had to the annexed sheet of drawings, making a part of the same.

Several combinations have been contrived and employed in printing-telegraphs forprinting either letters or igures at will. I will describe two more, one being a modification of the other, and both of my invention.

In bothcasesl make use of two type-wheels, the one for printing letters and the other for printing 'gures. A c In the iirst system, the type-wheels, ixed crosswise over one another, are rocking on their common axis, and are placed, now the one,l now the other, opposite to the paper strip, which always keeps the same direction, while i in the second system the type-wheels are parallel and stationary on their axis, the printing plug or anvil alone being rocked and setting the paper strip opposite to now one type-wheel, now the other.

Figures 1, 2, 3, 4, 5 of the drawing illustrate all the parts.

Fig. l is a topvview of the receiving apparatus, in which A and B are two type-wheels, cut out in a rin g'shape. A is the letter-wheel, and B the figure or othercomplemental-mark wheel. The letter-wheel A has, 'at C D, two holes formed through both ends of one of its diameters, and the figure-wheel B has, at E F, two similar perforations through the two ends of one of its diameters. The wheel B is made to enter the wheel A so that thel holes- C E and D E may coincide. A andB are made to cross over one another, and are secured to each other by rivets.

I J K L represent a metallic disk, tting exactly within the wheel B. This disk being placed within the wheel B, two screw-cut holes are pierced in its periphery through the apertures E F, into which holes are engaged headless screws Gr H, upon which the cross-wheels are pivoted. The disk is then so cut out as to only preserve a central ground and two spokes, both ground and spokes constituting the rocking axis ofthe cross-wheels. The cross-wheels thus prepared are xed on the last-driven axis ofthe clock-work, whereby thetype-wheels are rotated. A piece. of steel, Q P, serving as a stop to the cross-wheel, is screwed on M N, and a double lever, Q R, is securely tted in a slide formed into M N. A lconnecting-rod, S, is jointed to the double lever and the figure- Wheel. A horseshoe-like spring, T, presses on the two ends of the double lever, so as to give the cross-wheels proper 'steadiness I will now describe the mechanism whereby the cross-wheels are made'to oscillate.

A' B' is the last-driven axis of the clockwork which serves for printing. It makes a complete revolution every time a type is printed. Itt carries an eccentric, C', which, through the connecting-rod D and the bell-crank or bent lever E' F', causes `a to-and-fro motion being made by the rod G' H', which is elbowed at H', and terminated by a spring, I. Apin, J', xed into G' H', and sliding in a groove formed in the knee K', serves to maintain G' H' in an invariable direction.

When, by means of the transmitter of the apparatus, one of the' double-lever ends Q R is set in contact with the spring I', the printing action causes the oscillation of the cross'- wheels in one direction, until they are stopped by the stop-piece O P.

The nkng Plug 01 2l-Pplatusconsists of a tube, U, Fig. l, to the top side of which is-applied apiece of velvet, xed thereto by means of an edging, and'inside which enters a pistonlike-acting screw, V-a thick leather washer,

X, fixed by rivets to the mouth-oftube U, serv-V. .c Y

ing asV femalescrew to admit the screw V.

The plug is set on an axis, on which itl is free to rock,"an adjusting-screw, Y, and. its abutment allowing of the plug being brought more or less close to the type-wheels, so that v the nap only, and never the foundation ofthe fabric itself, can touch the wheels. A spring, Z, throws said plug on the type-wheels.

In the tube U, I put some cotton impregnated with an oleic ink, and by means of piston V the ink is made to ooze through the velvet gradually and as wanted.

In Figs. 2 and 3, which are views of a modiiication of the inking-plug, AB represent face views of parallel type-wheels. These are xed on 0" D", the last gearing-axis whereby they,

are caused to rotate. Two pins, E F', driven into C" D", cause the rocking action of the printing-plug.

G H is a metallic blade screwed on the printing-lever. (Not shown.) At the lower part of the blade, at H, is a pivot, on which is fitted another 'blade, I J. The printing plug K, on which is applied the strip of paper, is fixed to the top part of the blade I J.

LM N O are two connecting-rods, abutting on pins E F, to procure the rocking motion of the blade I J, and consequently of the plug K. The rod L lVI causes the plug to oscillate on left, and places it under the typewheel, as shown at Fig. 2. The spring P, Xed on I J, clamps, by means of a little stop, the blade I J on Jthe blade Gr H, so as to retain it in position, while the rod N O, by raising the spring P, unlocks the blade I J, which, on being released and pressed on bythe main spring Q, oscillates to the right so far as the stop R, and thus places the plug under the igure-wheel, as shown at Fig. 3, which is no other than Fig. 2 reproduced. All the constituent pieces of this system should be made of aluminium, so as not to overcharge the printing-lever.

Fig. 4. represents a side elevation of an electro-magnet as distributer of printing-currents. A B" is a -vertical thin wire coil, run through by the line-currents. Inside the same is fixed a soft-iron cylinder, Gl D, terminated at its lower part by a soft-iron washer, Ef F. Another cylinder, G H, of sinn'- lar metal, hollow, and thinner than U D, is suspended above G D", from the end of the lever Ill J oscillating about the point K. This 4lever is provided with a movable counter-weight, Ii, for which maybe substituted a reacting spring. The end I of the lever is abutting against the adjustingscrew Ml.

The local current which serves for printing enters the lever I J at K, and is conveyed through the regulating-screw to the printing electro-magnet.

I judge it proper to observe here that the type-wheels of my receiving apparatus rotate through the action of alternate positive and negative currents, succeeding each other without any perceptible interruption, and that printing is produced by cutting oif the linecurrent corresponding to the type which is to be printed. i

Now, when it is desired to set the typewheels in motion, the iron cylinder G" H' is drawn continuously by the cylinder 0 D, and the local or printing current is cut oliO at I M. When the line current is out off, G" Hf being no longer attracted by 0" D, the lever I J falls back on M. On the local current passing into the electro-printer, printing is produced. As soon as the current is returned to the line, the local current is broken, and so on.

Fig. 5 represents another form of electromagnet for distributing the printing-currents. Al B" is a thin wire electro -magnet, run through by the line-currents. The pallet 0' is very light, and .so is its rod. It oscillates about the point D". E is its reacting spring. Fl is both an'abutment and adjusting-screw. The local current enters the system through the support of screw F, and goes out through the support of the armature C'.

When the type-wheels are set in motion the pallet 0 is attracted by the electro-magnet A B, and the local current is broken at F. When the line-current is cut oil', the armature, being no longer drawn., rushes on the scre'wF, and gives passage to the local current, whereby printing is going to be effected.

When the current is returned to the line, the armature 0" cuts ofi' the local current, and s0 forth.

Nota Bene-The electro-magnet and its armature may vary in their shapes and sizes indenitely, which is unimportant, the main point being that the wire of distributing electro-magnet and that of the electro-magnet by which are rotated the type-wheels can receive the line-current in different ways.

I claim- 1. In a printing-telegraph, the construction and application of cross type-wheels, oscillat ing on their common axis, and the mechanical means described, or other equivalents, to produce their oscillating motions.

2. The construction and application ofthe adjustable inking-plug, in combination with the double printing-wheels, substantially as described.

IHA. J. DUJARDIN. 

